High severity · published Aug 12, 2021
CVE-2021-36942
Windows LSA Spoofing Vulnerability
RansomwareIn wildKEV
7.5
CVSS
66%
EPSS
Yes
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)66.0% · higher than 99% of CVEs
Exploited in the wildYes
CISA KEVListed Nov 3, 2021
Federal remediation dueNov 17, 2021
Ransomware campaign useKnown
Affected products
Which versions
WI
Windows · Microsoft
All versions, or not specified · source: KEV
WS
Windows Server 2008 R2 Service Pack 1 · Microsoft
6.1.7601.0 before 6.1.7601.25685 · source: vendor
WS
Windows Server 2008 R2 Service Pack 1 (Server Core installation) · Microsoft
6.1.7601.0 before 6.1.7601.25685 · source: vendor
WS
Windows Server 2008 Service Pack 2 · Microsoft
6.0.6003.0 before 6.0.6003.21192 · source: vendor
WS
Windows Server 2008 Service Pack 2 (Server Core installation) · Microsoft
6.0.6003.0 before 6.0.6003.21192 · source: vendor
WS
Windows Server 2012 · Microsoft
6.2.9200.0 before 6.2.9200.23435 · source: vendor, NVD
WS
Windows Server 2012 (Server Core installation) · Microsoft
6.2.9200.0 before 6.2.9200.23435 · source: vendor
WS
Windows Server 2012 R2 · Microsoft
6.3.9600.0 before 6.3.9600.20094 · source: vendor
WS
Windows Server 2012 R2 (Server Core installation) · Microsoft
6.3.9600.0 before 6.3.9600.20094 · source: vendor
WS
Windows Server 2016 · Microsoft
10.0.14393.0 before 10.0.14393.4583 · source: vendor, NVD
WS
Windows Server 2016 (Server Core installation) · Microsoft
10.0.14393.0 before 10.0.14393.4583 · source: vendor
WS
Windows Server 2019 · Microsoft
10.0.17763.0 before 10.0.17763.2114 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-36942
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-36942
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
vendor-advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36942
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